CN112087229A - Miniaturized low-cost multichannel low-phase-noise low-spurious point frequency source - Google Patents
Miniaturized low-cost multichannel low-phase-noise low-spurious point frequency source Download PDFInfo
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- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
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Abstract
The invention provides a miniaturized low-cost multi-path low-phase-noise low-spurious point frequency source, which comprises: a comb spectrum generation circuit for generating a higher harmonic signal from the crystal oscillator signal; the C-band point frequency signal output circuit generates a C-band point frequency signal according to the higher harmonic signal through 3-stage filtering, the band harmonic signal is divided into three paths of power division signals by the power divider, and the first path of power division signal is used for generating the C-band point frequency signal; the X-band point frequency signal output circuit generates a Ku-band point frequency signal according to the second path of power division signals of the power divider through 4-stage frequency multiplication and 2-stage filtering; and the Ku waveband point frequency signal output circuit generates a Ku waveband point frequency signal according to the third path of power division signals of the power divider through 3-stage frequency multiplication, 2-stage frequency multiplication and 3-stage filtering. The invention has the advantages of miniaturization, low cost, multi-channel point frequency source, small stray, low phase noise and the like, and can be applied to a miniaturized microwave and millimeter wave frequency comprehensive system.
Description
Technical Field
The invention relates to the technical field of microwave and millimeter wave circuit design, in particular to a miniaturized low-cost multi-path low-phase-noise low-stray-point frequency source.
Background
The electronic system has higher and higher requirements on frequency synthesis, high frequency, multiple frequency bands, low phase noise, low stray and the like. However, as the frequency increases, the performance of the frequency source may decrease, and in order to meet the performance requirements, the frequency synthesis system usually adopts the technologies of frequency mixing and frequency doubling, and is obtained by frequency mixing using a high-frequency point frequency source and a low-frequency step frequency source. PDRO (sampling phase-locked frequency source) has the advantages of low phase noise, low spurious and the like as a point frequency source, but the application range of the PDRO is still limited by the defects of large volume, high price, low reliability and the like.
In the prior art, granted patent CN106452434A, "a synthesis system of a low-noise and low-power consumption point-frequency source", published in 2017, 2 month and 22 days, introduces a synthesis system of a sampling phase-detecting phase-locked loop, which can generate a low-noise and low-power consumption 8GHz point-frequency source. Compared with the invention, the volume is larger, the structure is complex, the reliability is not high, only single-point dot frequency signals can be output, and the application range is limited. Granted patent CN207677710U, "a link structure of an ultra-low phase noise source", published 2018, month 07, and 31, introduces a phase-locked structure that is inserted into the feedback loop of the phase-locked loop and acts like a "harmonic mixer", and combines the advantages of direct frequency synthesis and digital frequency synthesis to provide a mixed frequency synthesis mode, which solves the user's requirement for an ultra-low phase noise frequency source whose required frequency is not an integer multiple of the reference frequency. Compared with the invention, the invention has large volume, low stray performance and poor stability.
The patent CN207968463U entitled "subminiature point frequency source" published in 2018, 10.12.A phase-locked loop circuit with an ADF4106 chip as a core is introduced, a voltage-controlled oscillator is composed of discrete components, passive components are 0201 packaging components, and the packaging size of the point frequency source is greatly reduced through reasonable layout. Compared with the invention, the dot frequency output frequency is not high, only single-point dot frequency signals can be output, and the phase noise is poor.
In the journal of digital technology and application, 11 months in 2015, Yihan Ying and Duyong, the paper "design and implementation of P-band point frequency source" is published, a comb spectrum generator generates harmonic signals, and a miniaturized switch filter bank is used for frequency selection of the comb spectrum signals, so that five-path point frequency output is realized, the phase noise is low, and the frequency conversion is fast. Compared with the invention, the volume is large, the frequency is not high, and the highest output frequency is 1 GHz.
The above prior art patents or documents all implement point-frequency source modules from different schemes, but all of the above schemes have disadvantages, large volume and complex structure.
Disclosure of Invention
The invention aims to provide a miniaturized low-cost multi-channel low-phase-noise low-spurious point frequency source which can generate X-band, C-band and Ku-band point frequency signals simultaneously and has the advantages of small volume, low phase noise and low spurious.
In order to achieve the above object, the present invention provides a miniaturized low-cost multi-channel low-phase-noise low-spurious point frequency source, comprising: the comb spectrum generating circuit, the C wave band point frequency signal output circuit, the X wave band point frequency signal output circuit and the Ku wave band point frequency signal output circuit;
the comb spectrum generating circuit generates a higher harmonic signal of an excitation signal according to the externally input excitation signal;
the input end of the C-waveband point frequency signal output circuit is connected with the output end of the comb spectrum generation circuit; the C-band dot frequency signal output circuit comprises a first power divider; the input end of the X-band point frequency signal output circuit and the input end of the Ku-band point frequency signal output circuit are respectively connected with the output end of the first power divider;
the C-band dot frequency signal output circuit generates a C-band harmonic signal according to the higher harmonic; the first power divider divides the C-band point frequency signal into three paths of power division signals, wherein the first path of power division signal generates a C-band point frequency signal after power attenuation; the second path of power division signal is input into an X-waveband point frequency signal output circuit and is used for generating an X-waveband point frequency signal; and the third power division signal is input into a Ku waveband point frequency signal output circuit and is used for generating a Ku waveband point frequency signal.
Preferably, the comb spectrum generation circuit includes: an amplification matching circuit and a step diode; the input end of the amplification matching circuit is connected with the excitation signal and is used for providing a low-noise and stable-power signal for the step tube; and the output end of the amplification matching circuit is connected with the input end of the step diode, and the higher harmonic signal is generated through the step diode.
Preferably, the C-band dot frequency signal output circuit includes a first attenuator, a first band-pass filter, a first amplifier, a second band-pass filter, a second amplifier, a third band-pass filter, a first power divider, and a second attenuator, which are connected in sequence; the input end of the first attenuator is connected with the output end of the step diode, and the input end of the first band-pass filter is connected with the output end of the first attenuator; the input end of the second attenuator is connected with the first output end of the first power divider; the first attenuator, the second attenuator, the first amplifier and the second amplifier are used for adjusting the power of the C-band signal.
Preferably, the first, second and third band-pass filters have a passband in the range of 2.58GHz to 2.62GHz, a stopband rejection < -40dBc @2.5GHz, < -40dBc @2.7 GHz.
Preferably, the X-band dot frequency signal output circuit includes a third attenuator, a first frequency multiplier, a fourth attenuator, a fourth bandpass filter, a third amplifier, a fifth bandpass filter, and a fifth attenuator, which are connected in sequence. The input end of the third attenuator is connected with the second output end of the first power divider, and the output end of the third attenuator is connected with the input end of the first frequency multiplier; outputting the X-waveband dot frequency signal through an output end of the fifth attenuator; the third to fifth attenuators and the third amplifier are used for adjusting the power of the X-band signal.
Preferably, the frequency quadruple is performed by the first frequency multiplier; the bandwidths of the fourth band-pass filter and the fifth band-pass filter are both 10.2 GHz-10.8 GHz, and the stopband rejection is less than-59 dBc @7.8GHz and less than-62 dBc @13 GHz.
Preferably, the Ku-band spot frequency signal output circuit comprises a sixth attenuator, a second frequency multiplier, a seventh attenuator, a sixth band-pass filter, a fourth amplifier, an eighth attenuator, a fifth amplifier, a third frequency multiplier, a seventh band-pass filter, a sixth amplifier, an eighth band-pass filter and a ninth attenuator which are connected in sequence; the input end of the sixth attenuator is connected with the third output end of the first power divider, and the output end of the sixth attenuator is connected with the input end of the second frequency multiplier; outputting the Ku waveband dot frequency signal through an output end of a ninth attenuator; and the sixth attenuator, the ninth attenuator, the fourth amplifier, the sixth amplifier and the Ku-band signal power are used for adjusting the Ku-band signal power.
Preferably, the second frequency multiplier is used for carrying out frequency tripling, and the third frequency multiplier is used for carrying out frequency doubling; the passband of the sixth band-pass filter is 7.7 GHz-8.1 GHz, the stopband rejection is less than-45 dBc @5.8GHz, and less than-53 dBc @9.8 GHz; the passband ranges of the seventh band-pass filter and the eighth band-pass filter are both 15.3 GHz-15.9 GHz, the stopband rejection is less than-49 dBc @13GHz, and less than-47 dBc @18.2 GHz.
Preferably, the excitation signal is a 100MHz crystal oscillator signal.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the invention, one path of crystal oscillator signal is used as a reference input signal, and dot frequency signals of X wave band, C wave band and Ku wave band are generated simultaneously;
2) the integrated circuit can be integrated into a silicon-aluminum box body of 40mm multiplied by 8mm, and has the advantage of small volume;
3) the invention has the advantages of low phase noise and low stray, and has good use value and popularization value.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are an embodiment of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts according to the drawings:
FIG. 1 is a schematic circuit diagram of a miniaturized, low-cost, multi-channel, low-phase-noise, low-spurious point frequency source according to the present invention;
FIG. 2 is a schematic diagram of the external structure of a miniaturized, low-cost, multi-channel, low-phase-noise, low-spurious point frequency source according to the present invention;
FIG. 3 is a schematic diagram of the bandwidths and center frequency points of the fourth and fifth bandpass filters according to the present invention;
FIG. 4 is a schematic diagram of the bandwidth and center frequency of a sixth bandpass filter according to the present invention;
FIG. 5 is a schematic diagram of bandwidths and center frequency points of a seventh and eighth bandpass filters according to the present invention;
in the figure: 1. a comb spectrum generation circuit; 11. an amplification matching circuit; 12. a step diode;
2. c-band dot frequency signal output circuit; 21. a first attenuator; 22. a first band pass filter; 23. a first amplifier; 24. a second band-pass filter; 25. a second amplifier; 26. a third band-pass filter; 27. a first power divider; 28. a second attenuator;
3. an X-band dot frequency signal output circuit; 31. a third attenuator; 32. a first frequency multiplier; 33. a fourth attenuator; 34. a fourth band-pass filter; 35. a third amplifier; 36. a fifth bandpass filter; 37. a fifth attenuator;
4. a Ku waveband dot frequency signal output circuit; 401. a sixth attenuator; 402. a second frequency multiplier; 403. a seventh attenuator; 404. a sixth band-pass filter; 405. a fourth amplifier; 406. an eighth attenuator; 407. a fifth amplifier; 408. a third frequency multiplier; 409. a seventh band-pass filter; 410. a sixth amplifier; 411. an eighth band-pass filter; 412. a ninth attenuator.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The frequency range of the C-band dot frequency signal is 3.4 GHz-4.7 GHz, the frequency range of the X-band dot frequency signal is 8.4 GHz-12.4 GHz, and the frequency range of the Ku-band dot frequency signal is 10 GHz-12.7 GHz. As shown in fig. 1, the present invention provides a miniaturized, low-cost, multi-channel, low-phase-noise, low-spurious point frequency source capable of simultaneously obtaining C-band, X-band, and Ku-band point frequency signals. The miniaturized low-cost multipath low-phase-noise low-spurious point frequency source comprises: the comb spectrum generating circuit comprises a comb spectrum generating circuit 1, a C wave band dot frequency signal output circuit 2, an X wave band dot frequency signal output circuit 3 and a Ku wave band dot frequency signal output circuit 4.
The comb spectrum generating circuit 1 generates a higher harmonic signal of an excitation signal according to the excitation signal input from the outside; in an embodiment of the present invention, the excitation signal is a 100MHz crystal oscillator signal. The comb spectrum generation circuit 1 includes: an amplification matching circuit 11 and a step diode 12; the input end of the amplification matching circuit is connected with the crystal oscillator signal and is used for providing a low-noise signal with stable power for the step tube; the output end of the amplification matching circuit is connected with the input end of the step diode, and a C-band higher harmonic signal of the crystal oscillator signal is generated through the step diode 12. In the embodiment of the present invention, the amplifying and matching circuit 11 is an NPN type transistor MRF581, and the step diode adopts MP 4023.
As shown in fig. 1, the C-band spot frequency signal output circuit 2 is configured to output a C-band spot frequency signal, and includes a first attenuator 21, a first bandpass filter 22, a first amplifier 23, a second bandpass filter 24, a second amplifier 25, a third bandpass filter 26, a first power divider 27, and a second attenuator 28, which are connected in sequence.
The input end of the first attenuator is connected with the output end of the step diode, the output end of the first attenuator is connected with the input end of the first band-pass filter, the output end of the first band-pass filter is connected with the input end of the first amplifier, the output end of the first amplifier is connected with the input end of the second band-pass filter, the output end of the second band-pass filter is connected with the input end of the second amplifier, and the output end of the second amplifier is connected with the input end of. In the embodiment of the invention, the first, second and third band-pass filters are FBAR filters with a model RSFKf1X000B1 of Tianjinuosi, the passband range is 2.58 GHz-2.62 GHz, the stopband rejection is < -40dBc @2.5GHz and < -40dBc @2.7GHz (corresponding to the C band), and C band harmonic signals are obtained after three times of filtering through the first to third band-pass filters. The stray suppression of the FBAR filter is 40dBc, and the maximum stray suppression can reach 120dBc by adopting a three-level FBAR filter. The first amplifier 23 is selected from a chip NC1068C-2638 of the thirteenth institute of electronics and technology, and the second amplifier 25 is selected from a chip NC10252C-204 of the thirteenth institute of electronics and technology, china. The first attenuator, the second attenuator, the first amplifier and the second amplifier are used for adjusting the power of the C-band signal.
Further, the output end of the third band-pass filter is connected with the input end of the first power divider. In the embodiment of the present invention, the first power divider 27 is a power divider chip NC6502-203 of the thirteenth institute of electrical and technology, ltd. The first power divider 27 divides the C-band harmonic signal into three power dividing signals, which are the first to third power dividing signals, respectively. The first path of power division signal is input to the second attenuator 28 through the first output end of the first power divider 27, and generates a C-band dot frequency signal after power attenuation is performed through the second attenuator 28; the second path of power division signal is input to the X-band dot frequency signal output circuit 3 through the second output end of the first power divider 27, and is used for generating an X-band dot frequency signal; the third power division signal is input to the Ku-band dot frequency signal output circuit 4 through a third output terminal of the first power divider 27, and is used for generating a Ku-band dot frequency signal. The total gain of the C-band dot frequency signal output circuit 2 is 35dB, and the output power is 8 dBm.
As shown in fig. 1, the X-band spot frequency signal output circuit 3 is used for generating an X-band spot frequency signal, and includes a third attenuator 31, a first frequency multiplier 32, a fourth attenuator 33, a fourth bandpass filter 34, a third amplifier 35, a fifth bandpass filter 36, and a fifth attenuator 37, which are connected in sequence.
The input end of the third attenuator is connected to the second output end of the first power divider 27, and receives the second power dividing signal; the output end of the third attenuator is connected with the input end of the first frequency multiplier; the input end of the fourth attenuator is connected with the output end of the first frequency multiplier, the input end of the fourth band-pass filter is connected with the output end of the fourth attenuator, the input end of the third amplifier is connected with the output end of the fourth band-pass filter, the input end of the fifth band-pass filter is connected with the output end of the third amplifier, and the input end of the fifth attenuator is connected with the output end of the fifth band-pass filter. The third to fifth attenuators and the third amplifier are used for adjusting the power of the X-band signal.
The second path of power division signal passes through the third attenuator 31 and then is quadrupled by the first frequency multiplier 32. The second path of quadrupled power division signals are subjected to primary filtering by a fourth band-pass filter 34, the signals filtered by the fourth band-pass filter 34 are amplified by a third amplifier 35 and then subjected to secondary filtering by a fifth band-pass filter 36, the signals filtered by the fifth band-pass filter 36 are subjected to power regulation by a fifth attenuator 37, and finally, X-band point frequency signals are obtained. In the embodiment of the present invention, the first frequency multiplier 32 is a frequency multiplier chip NC17702C-712 of the thirteenth institute of electrical and technology, china corporation. The fourth and fifth band-pass filters are self-imitated ceramic substrate filters, the main parameters of which are shown in figure 3, the band-pass range is 10.2 GHz-10.8 GHz, the stop band rejection is less than-59 dBc @7.8GHz, less than-62 dBc @13GHz (corresponding to the X wave band), and the center frequency is 10.4 GHz. And outputting the X-waveband dot frequency signal through an output end of a fifth attenuator. Clutter in the X-band spot frequency signal output circuit 3 is mainly multiple harmonic components generated after passing through the first frequency multiplier 32, and two-stage filtering is performed through the fourth and fifth band-pass filters, so that the maximum suppression of harmonic waves after quadruple frequency can reach 118 dBc. The third amplifier 35 is selected from the HITTITE amplifier chip HMC564 in the united states.
As shown in fig. 1, the Ku-band spot frequency signal output circuit 4 is configured to generate a Ku-band spot frequency signal, and includes a sixth attenuator 401, a second frequency multiplier 402, a seventh attenuator 403, a sixth band-pass filter 404, a fourth amplifier 405, an eighth attenuator 406, a fifth amplifier 407, a third frequency multiplier 408, a seventh band-pass filter 409, a sixth amplifier 410, an eighth band-pass filter 411, and a ninth attenuator 412, which are connected in sequence.
The input end of the sixth attenuator is connected to the third output end of the first power divider 27, the input end of the second frequency multiplier is connected to the output end of the sixth attenuator, the input end of the seventh attenuator is connected to the output end of the second frequency multiplier, the input end of the sixth band-pass filter is connected to the output end of the seventh attenuator, the input end of the fourth amplifier is connected to the output end of the sixth band-pass filter, the input end of the eighth attenuator is connected to the output end of the fourth amplifier, the input end of the fifth amplifier is connected to the output end of the eighth attenuator, the input end of the third frequency multiplier is connected to the output end of the fifth amplifier, the input end of the seventh band-pass filter is connected to the output end of the third frequency multiplier, the input end of the sixth amplifier is. And the sixth attenuator, the ninth attenuator, the fourth amplifier, the sixth amplifier and the Ku-band signal power are used for adjusting the Ku-band signal power.
The frequency tripled by the second frequency multiplier 402, the second frequency multiplier 402 is a nonlinear circuit built by a beam diode MA4E 2039. The frequency doubling is performed by a third frequency multiplier 408, and the frequency multiplier chip HMC205 of HITTITE in the united states is selected for the third frequency multiplier 408. The fourth amplifier 405 and the fifth amplifier 407 are selected from the amplifier chips CHA2063A-99F/00 of UMS, and the sixth amplifier 410 is selected from the amplifier chip HMC516 of HITTITE, USA. In the Ku-band spot frequency signal output circuit 4, the third power division signal (corresponding to the C band) output by the first power divider 27 is subjected to frequency multiplication by 3, then amplified and filtered, and then frequency multiplication by 2, and then amplified and filtered to output the Ku-band spot frequency signal. Clutter in the Ku-band spot frequency signal output circuit 4 is mainly multiple harmonic components generated after passing through the second frequency multiplier and the third frequency multiplier. As shown in fig. 4, the passband of the sixth band-pass filter 404 is 7.7GHz to 8.1GHz, and the harmonic component can be suppressed by 45 dBc; as shown in fig. 5, the seventh and eighth bandpass filters are self-imitated ceramic substrate filters, the passband ranges from 15.3GHz to 15.9GHz (corresponding to the Ku band), the center frequency is 15.6GHz, and the harmonic component suppression can reach 49 dBc.
As shown in fig. 2, the miniaturized, low-cost, multi-channel, low-phase-noise, low-stray-point frequency source of the present invention can be integrated into a 40mm × 40mm × 8mm silicon-aluminum box, the connection wire of the silicon-aluminum box adopts a gold wire bonding process, and the cover plate of the silicon-aluminum box is sealed by means of sintering or laser sealing and welding.
Compared with the prior art, the point frequency source phase noise of the invention is 20lg (frequency multiplication) deteriorated on the basis of the phase noise of the crystal oscillator signal, and is equivalent to the same frequency band PDRO, the phase noise of the crystal oscillator is-148 dBc/Hz @1kHz, -160dBc/Hz @5kHz, the phase noise of the C wave band signal is less than or equal to-117 dBc/Hz @1kHz, less than or equal to-130 dBc/Hz @5kHz, the phase noise of the X wave band signal is less than or equal to-105 dBc/Hz @1kHz, less than or equal to-117 dBc/Hz @5kHz, and the phase noise of the Ku wave band signal is less than or equal to-102 dBc/Hz @1kHz, and less than or equal to-114 dBc/Hz.
The clutter of the low-cost multi-path low-phase-noise low-spurious point frequency source mainly comes from the harmonic waves of the comb spectrum generator and the first frequency multiplier to the third frequency multiplier, and the clutter can be well filtered by the first frequency multiplier to the eighth frequency multiplier. When the point frequency source is tested, the near-end stray is not more than-90 dBc, and the far-end stray is not more than-70 dBc.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A miniaturized, low-cost, multi-channel, low-phase-noise, low-spurious point frequency source, comprising: the comb spectrum generating circuit, the C wave band point frequency signal output circuit, the X wave band point frequency signal output circuit and the Ku wave band point frequency signal output circuit;
the comb spectrum generating circuit generates a higher harmonic signal of an excitation signal according to the externally input excitation signal;
the input end of the C-waveband point frequency signal output circuit is connected with the output end of the comb spectrum generation circuit; the C-band dot frequency signal output circuit comprises a first power divider; the input end of the X-band point frequency signal output circuit and the input end of the Ku-band point frequency signal output circuit are respectively connected with the output end of the first power divider;
the C-band dot frequency signal output circuit generates a C-band dot frequency signal according to the higher harmonic; the first power divider divides the C-band point frequency signal into three paths of power division signals, wherein the first path of power division signal generates a C-band point frequency signal after power attenuation; the second path of power division signal is input into an X-waveband point frequency signal output circuit and is used for generating an X-waveband point frequency signal; and the third power division signal is input into a Ku waveband point frequency signal output circuit and is used for generating a Ku waveband point frequency signal.
2. A miniaturized, low-cost, multi-path, low-phase-noise, low-spur frequency source as in claim 1, wherein said comb spectrum generation circuit comprises: an amplification matching circuit and a step diode; the input end of the amplification matching circuit is connected with the excitation signal and is used for providing a low-noise and stable-power signal for the step tube; and the output end of the amplification matching circuit is connected with the input end of the step diode, and the higher harmonic signal is generated through the step diode.
3. The miniaturized, low-cost, multi-path, low-phase-noise, low-spurious point source of claim 1, wherein said C-band point-frequency signal output circuit comprises a first attenuator, a first band-pass filter, a first amplifier, a second band-pass filter, a second amplifier, a third band-pass filter, a first power divider, and a second attenuator, which are connected in sequence; the input end of the first attenuator is connected with the output end of the step diode, the input end of the first band-pass filter is connected with the output end of the first attenuator, and the input end of the second attenuator is connected with the first output end of the first power divider; the first attenuator, the second attenuator, the first amplifier and the second amplifier are used for adjusting the power of the C-band signal.
4. A miniaturized, low-cost, multi-path, low-phase-noise, low-spurious point source as defined in claim 3, wherein said first, second and third bandpass filters have a passband in the range of 2.58 GHz-2.62 GHz, a stopband rejection < -40dBc @2.5GHz, < -40dBc @2.7 GHz.
5. The miniaturized, low-cost, multi-path, low-phase-noise, low-spurious point source of claim 1, wherein said X-band point signal output circuit comprises a third attenuator, a first frequency multiplier, a fourth attenuator, a fourth bandpass filter, a third amplifier, a fifth bandpass filter, and a fifth attenuator, which are connected in sequence. The input end of the third attenuator is connected with the second output end of the first power divider, and the output end of the third attenuator is connected with the input end of the first frequency multiplier; outputting the X-waveband dot frequency signal through an output end of the fifth attenuator; the third to fifth attenuators and the third amplifier are used for adjusting the power of the X-band signal.
6. A miniaturized, low-cost, multi-path, low-phase-noise, low-spurious point frequency source as claimed in claim 5, characterized by a quadruple frequency by said first frequency multiplier; the bandwidths of the fourth band-pass filter and the fifth band-pass filter are both 10.2 GHz-10.8 GHz, and the stopband rejection is less than-59 dBc @7.8GHz and less than-62 dBc @13 GHz.
7. The miniaturized, low-cost, multi-path, low-phase-noise, low-spurious point-frequency source of claim 1, wherein the Ku-band point-frequency signal output circuit comprises a sixth attenuator, a second frequency multiplier, a seventh attenuator, a sixth band-pass filter, a fourth amplifier, an eighth attenuator, a fifth amplifier, a third frequency multiplier, a seventh band-pass filter, a sixth amplifier, an eighth band-pass filter, and a ninth attenuator, which are connected in sequence; the input end of the sixth attenuator is connected with the third output end of the first power divider, and the output end of the sixth attenuator is connected with the input end of the second frequency multiplier; outputting the Ku waveband dot frequency signal through an output end of a ninth attenuator; and the sixth attenuator, the ninth attenuator, the fourth amplifier, the sixth amplifier and the Ku-band signal power are used for adjusting the Ku-band signal power.
8. The miniaturized, low-cost, multi-path, low-phase-noise, low-spurious point frequency source of claim 7, wherein frequency tripled by said second frequency multiplier and frequency doubled by said third frequency multiplier; the passband of the sixth band-pass filter is 7.7 GHz-8.1 GHz, the stopband rejection is less than-45 dBc @5.8GHz, and less than-53 dBc @9.8 GHz; the passband ranges of the seventh band-pass filter and the eighth band-pass filter are both 15.3 GHz-15.9 GHz, the stopband rejection is less than-49 dBc @13GHz, and less than-47 dBc @18.2 GHz.
9. A miniaturized, low cost multi-path, low phase noise, low spurious point frequency source as defined in claim 1, wherein said excitation signal is a 100MHz crystal oscillator signal.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112671399A (en) * | 2020-12-17 | 2021-04-16 | 中国电子科技集团公司第二十六研究所 | Ultra-wideband low-phase-noise frequency synthesizer |
| CN113541687A (en) * | 2021-08-20 | 2021-10-22 | 成都西蒙电子技术有限公司 | Low-phase-noise narrow-band frequency synthesizer |
| CN115701888A (en) * | 2023-01-05 | 2023-02-14 | 成都鸿启兴电子科技有限公司 | Microwave frequency source and microwave equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050075089A1 (en) * | 2003-09-22 | 2005-04-07 | Sony Corporation | Image rejection mixer and multiband generator |
| CN103957058A (en) * | 2014-05-08 | 2014-07-30 | 中国科学院半导体研究所 | Device for generating triangular microwave signals based on dual drive Mach-Zehnder modulator |
| CN109003873A (en) * | 2018-08-17 | 2018-12-14 | 北京无线电测量研究所 | A kind of C-band radiation of power source |
| CN208316704U (en) * | 2018-05-31 | 2019-01-01 | 安徽四创电子股份有限公司 | A kind of C-band radar high stable high isolation multiple signals source circuit |
| CN209030193U (en) * | 2018-12-05 | 2019-06-25 | 南京誉葆科技有限公司 | A kind of microwave source and solid state transmitter component |
| US10761401B1 (en) * | 2019-10-30 | 2020-09-01 | Nanjing University Of Aeronautics And Astronautics | Method and apparatus for processing radio frequency input signals and providing interfering radio frequency output signals |
| CN111654284A (en) * | 2020-07-20 | 2020-09-11 | 无锡华测电子***有限公司 | Discrete adjustable point frequency source with ultralow phase noise |
-
2020
- 2020-09-18 CN CN202010987372.3A patent/CN112087229B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050075089A1 (en) * | 2003-09-22 | 2005-04-07 | Sony Corporation | Image rejection mixer and multiband generator |
| CN103957058A (en) * | 2014-05-08 | 2014-07-30 | 中国科学院半导体研究所 | Device for generating triangular microwave signals based on dual drive Mach-Zehnder modulator |
| CN208316704U (en) * | 2018-05-31 | 2019-01-01 | 安徽四创电子股份有限公司 | A kind of C-band radar high stable high isolation multiple signals source circuit |
| CN109003873A (en) * | 2018-08-17 | 2018-12-14 | 北京无线电测量研究所 | A kind of C-band radiation of power source |
| CN209030193U (en) * | 2018-12-05 | 2019-06-25 | 南京誉葆科技有限公司 | A kind of microwave source and solid state transmitter component |
| US10761401B1 (en) * | 2019-10-30 | 2020-09-01 | Nanjing University Of Aeronautics And Astronautics | Method and apparatus for processing radio frequency input signals and providing interfering radio frequency output signals |
| CN111654284A (en) * | 2020-07-20 | 2020-09-11 | 无锡华测电子***有限公司 | Discrete adjustable point frequency source with ultralow phase noise |
Non-Patent Citations (1)
| Title |
|---|
| 蔡鹏飞;李青平;杨懿;张大鹤;: "基于谐波混频技术的宽带频综的设计", 无线电通信技术, no. 04, pages 77 - 79 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112671399A (en) * | 2020-12-17 | 2021-04-16 | 中国电子科技集团公司第二十六研究所 | Ultra-wideband low-phase-noise frequency synthesizer |
| CN113541687A (en) * | 2021-08-20 | 2021-10-22 | 成都西蒙电子技术有限公司 | Low-phase-noise narrow-band frequency synthesizer |
| CN115701888A (en) * | 2023-01-05 | 2023-02-14 | 成都鸿启兴电子科技有限公司 | Microwave frequency source and microwave equipment |
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|---|---|
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